var sCell="";
function SortableTable(oTable, oSortTypes,sCellcon) {
	sCell = sCellcon.split(",");
	this.element = oTable;
	this.tHead = oTable.tHead;
	this.tBody = oTable.tBodies[0];
	this.document = oTable.ownerDocument || oTable.document;
	this.sortColumn = null;
	this.descending = null;
	var oThis = this;
	this._headerOnclick = function (e) {
		oThis.headerOnclick(e);
		};

	var win = this.document.defaultView || this.document.parentWindow;
	this._onunload = function () {
		oThis.destroy();
		};
	if (win && typeof win.attachEvent != "undefined") {
		win.attachEvent("onunload", this._onunload);
		}

	this.initHeader(oSortTypes || []);
	}

SortableTable.gecko = navigator.product == "Gecko";
SortableTable.msie = /msie/i.test(navigator.userAgent);
SortableTable.removeBeforeSort = SortableTable.gecko;

SortableTable.prototype.onsort = function () {};
SortableTable.prototype.initHeader = function (oSortTypes) {
	var cells = this.tHead.rows[0].cells;
	var l = cells.length;
	var img, c;
	for (var i = 0; i < l; i++) {
		for(j=0;j<sCell.length;j++){
			if(sCell[j]==cells[i].cellIndex+1){
				//alert("123");
				c = cells[i];
				img = this.document.createElement("IMG");
				img.src = "http://www.uideas.cn/download/images/blank.gif"
				c.appendChild(img);
				if (oSortTypes[i] != null) {
					c._sortType = oSortTypes[i];
					}
				if (typeof c.addEventListener != "undefined"){
					c.addEventListener("click", this._headerOnclick, false);
					}
				else if (typeof c.attachEvent != "undefined"){
					c.attachEvent("onclick", this._headerOnclick);
					}
				}
			}
		}
	}

SortableTable.prototype.uninitHeader = function () {
	var cells = this.tHead.rows[0].cells;
	var l = cells.length;
	var c;
	for (var i = 0; i < l; i++) {
		for(j=0;j<sCell.length;j++){
			if(sCell[j]==cells[i].cellIndex+1){
				c = cells[i];
				c.removeChild(c.lastChild);
				if (typeof c.removeEventListener != "undefined"){
					c.removeEventListener("click", this._headerOnclick, false);
					}
				else if (typeof c.detachEvent != "undefined"){
					c.detachEvent("onclick", this._headerOnclick);
					}
				}
			}
		}
	}

SortableTable.prototype.updateHeaderArrows = function () {
	var cells = this.tHead.rows[0].cells;
	var l = cells.length;
	var img;
	for (var i = 0; i < l; i++) {
		for(j=0;j<sCell.length;j++){
			if(sCell[j]==cells[i].cellIndex+1){
				//alert("123");
				img = cells[i].lastChild;
				if (i == this.sortColumn){
					img.className = "sort-arrow " + (this.descending ? "descending" : "ascending")
					}
				else{
					img.className = "sort-arrow";
					}
				}
			}
		}
	}

SortableTable.prototype.headerOnclick = function (e) {
var el = e.target || e.srcElement;
while (el.tagName != "TH")
el = el.parentNode;

this.sort(SortableTable.msie ? SortableTable.getCellIndex(el) : el.cellIndex);
};

SortableTable.getCellIndex = function (oTd) {
var cells = oTd.parentNode.childNodes
var l = cells.length;
var i;
for (i = 0; cells[i] != oTd && i < l; i++)
;
return i;
};

SortableTable.prototype.getSortType = function (nColumn) {
var cell = this.tHead.rows[0].cells[nColumn];
var val = cell._sortType;
if (val != "")
return val;
return "String";
};


SortableTable.prototype.sort = function (nColumn, bDescending, sSortType) {
if (sSortType == null)
sSortType = this.getSortType(nColumn);

if (sSortType == "None")
return;

if (bDescending == null) {
if (this.sortColumn != nColumn)
this.descending = true;
else
this.descending = !this.descending;
}

this.sortColumn = nColumn;

if (typeof this.onbeforesort == "function")
this.onbeforesort();

var f = this.getSortFunction(sSortType, nColumn);
var a = this.getCache(sSortType, nColumn);
var tBody = this.tBody;

a.sort(f);

if (this.descending)
a.reverse();

if (SortableTable.removeBeforeSort) {
var nextSibling = tBody.nextSibling;
var p = tBody.parentNode;
p.removeChild(tBody);
}

var l = a.length;
for (var i = 0; i < l; i++)
tBody.appendChild(a[i].element);

if (SortableTable.removeBeforeSort) {
p.insertBefore(tBody, nextSibling);
}

this.updateHeaderArrows();

this.destroyCache(a);

if (typeof this.onsort == "function")
this.onsort();
};

SortableTable.prototype.asyncSort = function (nColumn, bDescending, sSortType) {
var oThis = this;
this._asyncsort = function () {
oThis.sort(nColumn, bDescending, sSortType);
};
window.setTimeout(this._asyncsort, 1);
};

SortableTable.prototype.getCache = function (sType, nColumn) {
var rows = this.tBody.rows;
var l = rows.length;
var a = new Array(l);
var r;
for (var i = 0; i < l; i++) {
r = rows[i];
a[i] = {
value: this.getRowValue(r, sType, nColumn),
element: r
};
};
return a;
};

SortableTable.prototype.destroyCache = function (oArray) {
var l = oArray.length;
for (var i = 0; i < l; i++) {
oArray[i].value = null;
oArray[i].element = null;
oArray[i] = null;
}
}

SortableTable.prototype.getRowValue = function (oRow, sType, nColumn) {
var s;
var c = oRow.cells[nColumn];
if (typeof c.innerText != "undefined")
s = c.innerText;
else
s = SortableTable.getInnerText(c);
return this.getValueFromString(s, sType);
};

SortableTable.getInnerText = function (oNode) {
var s = "";
var cs = oNode.childNodes;
var l = cs.length;
for (var i = 0; i < l; i++) {
switch (cs[i].nodeType) {
case 1:
s += SortableTable.getInnerText(cs[i]);
break;
case 3:
s += cs[i].nodeValue;
break;
}
}
return s;
}

SortableTable.prototype.getValueFromString = function (sText, sType) {
switch (sType) {
case "Number":
return Number(sText);
case "CaseInsensitiveString":
return sText.toUpperCase();
case "Date":
var parts = sText.split("-");
var d = new Date(0);
d.setFullYear(parts[0]);
d.setDate(parts[2]);
d.setMonth(parts[1] - 1);
return d.valueOf();
}
return sText;
};

SortableTable.prototype.getSortFunction = function (sType, nColumn) {
return function compare(n1, n2) {
if (n1.value < n2.value)
return -1;
if (n2.value < n1.value)
return 1;
return 0;
};
};

SortableTable.prototype.destroy = function () {
this.uninitHeader();
var win = this.document.parentWindow;
if (win && typeof win.detachEvent != "undefined") { // only IE needs this
win.detachEvent("onunload", this._onunload);
}
this._onunload = null;
this.element = null;
this.tHead = null;
this.tBody = null;
this.document = null;
this._headerOnclick = null;
this.sortTypes = null;
this._asyncsort = null;
this.onsort = null;
};